password protected access about immudb

We would like that when the user starts the first time the app then he/she get a password to login. This password is encrypted and saved in the config file on the server. Call to the server are within a session with login -u -p and logout. Initially, the default username is immu.

We should have a logout command.
We should only store the private key inside sever conf.
Human readable messages.
Handle the case when the token on client is tampered/modified.

I have tested the last changes and we need the following modifications:

• no extra files on server, only store the encrypted password in the server config file
• when the section related to the password in the config file is empty, then the whole password generation can begin again
• only human-readable error messages
• a logout command